Please upload bios backup here for this model to build new bios Lenovo ThinkPad X1 Tablet (Machine types: 20GG, 20GH) BIOS Version: 1.55
Lenovo ThinkPad X1 Tablet 2nd Gen (Type 20JB, 20JC),15218-5 LGF-1.5MB 448.01Q03.0051 working bios,MX25L12805D_16MB